Working together, it takes two computers 15 minutes to send out a company's email. If it takes the slower computer 40 minutes to do the job on its own, how long will it take the fast computer to do the job on its own?

When are two distinct non vertical lines parallel

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

Big boi and travis scott are performing at the super bowl. travis scott is 62 years younger than twice big boi’s age. the sum of their ages is 70 years old. use b to represent big boi’s age. write and solve an equation.